Abstract : The Weyburn oilfield in SE Saskatchewan, Canada has been in production for more than 50 years.
A CO
2
flood was started in 2000 to enhance oil recovery. The gas is piped from a coal gasification
plant across the U
S border in North Dakota. In addition to boosting oil production it is expected that
about 30 million tonnes of CO
2
will be permanently stored in the reservoir, at a depth of about 1400
m, by the end of the 30 year lifetime of the project.